"A lot of people are saying that," she said. "I think that's just what happens when you get together, but we already have three (kids), so not yet." (She's mom to sons Brandon, 10, and Dylan, 8, with ex-husband Tommy Lee; Rock has a 16-year-old son, Robert James Ritchie Jr.)

Still, she said, she wouldn't rule out having more kids in the future. "You never know. Who knows?"